EP 2683787 A1 20140115 - ENCAPSULATED POLYMERIZATION ACCELERATOR AND ITS USE TO TRIGGER A GELLING SYSTEM BY PHYSICAL MEANS
Title (en)
ENCAPSULATED POLYMERIZATION ACCELERATOR AND ITS USE TO TRIGGER A GELLING SYSTEM BY PHYSICAL MEANS
Title (de)
VERKAPSELTER POLYMERISATIONBESCHLEUNIGER UND SEINE VERWENDUNG ZUR AUSLÖSUNG EINES GELIERSYSTEMS DURCH PHYSIKALISCHE MITTEL
Title (fr)
ACCÉLÉRATEUR DE POLYMERISATION ENCAPSULÉ ET SON UTILISATION POUR DÉCLENCHER UN SYSTÈME GÉLIFIANT PAR DES MOYENS PHYSIQUES
Publication
Application
Priority
- EP 11157866 A 20110311
- EP 2012053970 W 20120308
- EP 12708821 A 20120308
Abstract (en)
[origin: EP2497809A1] The instant invention relates to a process allowing the encapsulation of a polymerization accelerator, said process comprising the steps of: a) providing an reverse emulsion containing, in an oil phase, a water solution/dispersion containing the polymerisation activator, the oil phase including a heat curable mixture of an isocyanate and a polyalkyldiene hydroxylated or polyol, b) pouring the reverse emulsion in a water phase to make a multiple emulsion water/oil/water, containing drops of activators as the internal water phase, and then, c) heating the multiple emulsion obtained in step b) at a temperature of between 50 and 95°C, in order to cure the polyisocyanate in polyurethane and obtain drops of activator enclosed in shells of polyurethane dispersed in water. The invention also relates to aqueous gelling systems comprising the encapsulated polymerization accelerator with water soluble or dispersable monomers and a polymerization initiator dispersed in said monomers, usefull i.a. for sealing subterranean environments or consolidation of a soil or sealing of a subterranean structure.
IPC 8 full level
C09K 8/516 (2006.01); C09K 8/508 (2006.01); C09K 8/575 (2006.01); C09K 17/00 (2006.01)
CPC (source: CN EP US)
C08G 18/6423 (2013.01 - CN); C08G 18/698 (2013.01 - CN); C08G 18/792 (2013.01 - CN); C09D 5/022 (2013.01 - US); C09D 175/14 (2013.01 - US); C09K 3/1021 (2013.01 - CN); C09K 8/426 (2013.01 - CN); C09K 8/44 (2013.01 - CN US); C09K 8/508 (2013.01 - EP US); C09K 8/516 (2013.01 - EP US); C09K 8/5751 (2013.01 - EP US); C09K 17/18 (2013.01 - EP US); C09K 17/48 (2013.01 - CN EP US); E02D 3/12 (2013.01 - EP US); E02D 37/00 (2013.01 - EP US); E21B 33/138 (2013.01 - US); E21D 11/38 (2013.01 - US); F16L 55/1645 (2013.01 - US); C09K 2003/1068 (2013.01 - CN); C09K 2200/065 (2013.01 - CN); C09K 2208/14 (2013.01 - CN EP US)
Citation (search report)
See references of WO 2012123319A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2497809 A1 20120912; AU 2012228447 A1 20130926; AU 2012228447 B2 20150521; BR 112013023188 A8 20201110; BR 112013023188 B1 20201208; CA 2829508 A1 20120920; CA 2829508 C 20160503; CN 103502385 A 20140108; CN 103502385 B 20170531; EP 2683787 A1 20140115; EP 2683787 B1 20180516; MX 2013010442 A 20131003; MX 347589 B 20170503; RU 2013145514 A 20150420; RU 2579098 C2 20160327; US 10611949 B2 20200407; US 2014100304 A1 20140410; US 2017029690 A1 20170202; US 9499719 B2 20161122; WO 2012123319 A1 20120920
DOCDB simple family (application)
EP 11157866 A 20110311; AU 2012228447 A 20120308; BR 112013023188 A 20120308; CA 2829508 A 20120308; CN 201280021106 A 20120308; EP 12708821 A 20120308; EP 2012053970 W 20120308; MX 2013010442 A 20120308; RU 2013145514 A 20120308; US 201214004304 A 20120308; US 201615292277 A 20161013